Amoxicillin, Birth Control and Plan B

Patient

Q: Dear Doctor, I am on the birth control pill orthotricyclen and i have also been taking amoxicillin for about eight days now. I had recently had sex and was wondering if becoming pregnant was a high chance of occuring. should I take plan B or would that alter anything for taking all three?

A:
Amoxicillin can interfere with the functioning of the oral contraceptive pill and decrease its effectiveness. I would advise alternative contraceptive measures like condoms when on amoxicillin. You may have to discuss with your doctor about the use of plan B.

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These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.